Segment-shift for typewriting-machines



O. PETERMANN. SEGMENT SHIFT FOR TYPEWRITING MACHINES.

7 APPLICATION FILED SEPT 1 1, 1918. I 1 1,387,939. Patented Aug. 16,1921.

' N 2 SHEETS-SHEET 1.

INVENTOR ATTORNEYS 0. PETERMANN.

SEGMENT SHIFT FOR TYPEWRITING MACHINES. APPLICATION FILED SEPT. 11, ms.

1 ,38'7,939, I Patented Aug. 16, 1921.

2 SHEETS-SHEET 2- m-mmmm ATTORNEYS Arum oFFicE.

.or'ro PETERMANN, or GEO-TON, E YORK, COMPANY, me, or (moron, NEW YORK,

assrsnon T0 COR NA TYPEWRITER, A CORPORATION or NEW YORK.

SEGMENT-SHIFT FOR TYPEWRITING- MACHINES.

s n o w te Patented Aug. 16-, 1921.

Application filed. September 11, 1918. Serial No. 253,544.

To all whom it may concern:

Be it known thatl, O'rro PETERMANN, a citizen of the United States, and a resident of Groton, county of Tompkins, andState of New York, have invented certain new and useful Improvements in Segment-Shifts for Typewriting-Machines, of which the fol lowing is aspeciiication.

The principal object of the invention is to provide simple and efiicient means whereby the type-bar segment'may be vertically shifted with respect to the platen to permit the use of type-heads carrying a plurality of characters, the principal features of the present invention having special reference to that type of segment shift in which the segment is held normally in its uppermost position and is manually pulled down to its middle-case and upper-case position, as more fully hereinafter set forth.

In the drawing anneXed,-

Figure l is a vertical sectional view showing theparts in the positions they occupy when the segment is in its uppermost position;

frame parts being shown in horizontal section on the line II-II of Fig. 1;

Fig. 3 is a fragamentarysectional view on the line III-III of Fig. l

Fig. 4 is a View similar to Fig. 1 showing the parts in the position they occupy extending ear 11, formed at each end ofthe upper edge of the-plate and notched at its outer edge for sliding engagement with a vertical guide 12 carried by the frame. The upward movement of the segment-plate is restricted by a pair of depending stops 13. adapted to strike against the upper sur faces of the cars 11, these stops consisting in the present instance of adjustable screwpinsxl l threaded through the top of the opposite ends thereof bers of the frame.

Fig. 2 is a plan view of the same,the-

frame and locked. in their adjusted position by means of lock-nuts 15. c Projecting forwardly from the lower part i of the segmentrcarrying platelO adjacent are two ears 16, and

pivotally connected to these ears is a pair of arms 17, one lyingnear each side of the rock-shaft 18 journaled in the side mem- Dependingfrom the rock-shaft is a rigid to the lower end of this pin is a coil-spring 20 whose rear end is attached to a screw 21'supported by the frameand adapted to be adjusted forwardly and rearwardly to vary the tension of said spring. This ar rangement of devices, as is obvious, tends to normally hold the segment-plate in its uppermost position, 2'. e., lower-case position.

The segment is locked in its upper posiframe and both being affixed rigidly to .65 pin 19, and connected tion by means of a lock-bail consisting of i a bar 22 extending across the machine from side to side underneath the segment-shift- 2 ing arms 17 and pivotally hung from the front face of the segment by meansof a pair of upstanding arms 23 connected to the ends 2 of said bar 22, these arms 23 being pivotally connected to the segment by means of pivots 24 affixed to ears 25 projecting forwardly from the face of the segment-plate. Each of the arms 23 isprovided with an--eXten-. sion'which extends upwardly from its pivot 24:, and these extensions 25 are normally pulled rearwardly by coil-springs 26 connecting the arms to the segment-plate. Normally pulling the, extensions 25 rearwardly causes the bar 22 to normally wedge against the top of an upstanding stop 27 mounted on t e base-frame, the upper or operative face of this stop being inclined This is 28 and 29 pivotally mounted at each side of the machine, each pair of levers being supdownwardly and rearwardlyto bring about the aforesaid wedging actionwith the locklock-bar 22 rearwardly off the stop 27.

accomplished'by a pair of key-levers ported ona pivot 30 andeach lever being. held in its normal position, i. 6., with its j finger-key up, by means of a retractilespring 31. Each pair of levers is adapted when depressed to engage a lateral lug 32 formed on the adjacent one of the arms 17, so that the depression of any one of the shift-keys will bring about a downwardswinging of the forward ends of the arms 17 against the action of the spring 20 and thus pull down the segment.

through the medium of the arms 17. 7 this position of the lock-bail 22, it. will wardly' of the segment The key-levers 28and 29 are provided respectively with arms 28?v and 29 which extend upwardly and rearwardly and are provided each with a laterally-bent finger.

When either of the key-levers 28 is depressed, the lock-bail will beswung to the position shown in Fig. e and at the same time the segment will be pulled down strike squarely against a stop-pin 35 supported in one of the cross-bars of the frame and rendered vertically adjustable by being tapped therethrough, a lock-nut 86 being,

providedto lock this stop-pin 35 in its ad j usted position. This movement of the parts will bring the segment to ,its middle position and will arrest it quickly and accurately in that position; and when the open,

ator releases the key the spring 20 will restore the segment to its upper position, while the spring or springs 26 will automatically restore the lock-bail-bar 22 to locking relation with the stop 27. When either of the other keys 29 is depressed, the shorter arms 29 will swing the lock-bail far enough rearwardly to escape the stop-pin 35 when the.

segment is pulled down through the medium of the arms 17, so that the lock-bail does not interfere with the movement down- This downward movement of the segment, however, is arrested by another stop-pin 37' arranged in vertical alinement with the segment-plate 10 so that the lower edge of the segmentplate will strike squarely on top of this pin 37 and thus arrest the segmentin its lower position. The stop-pin 37 is made vertically adjustable and is lockedin its ad justed position in the same manner as stoppin 35. It will be understood that one or more of these stop-pins may be employed for each segment-shift.

The nature and scope of the invention having been thus indicated and its preferred embodiment having been specifically described, what is claimed as new is:

L'In a typewriting machine, the com bination of a machine frame, a type-barhanger support, means for guiding the support to move up and down in the frame, a

rock shaft extending transversely of the frame and rotatably supported thereon forward of the type-bar-hanger support, a pair of rock arms rigidly held' at their forward ends to said shaft and connected at their rear ends with the hanger support, one of said rock arms being provided intermediate its ends with a lateral projection, a depending arm rigidly held to the rock shaft, a coil spring connected at its forward end with said depending arm, tension adjusting means connecting the rear end of the spring with the frame, and a shift key lever overlying said projection on the rock arm and.piv-. otally supported in the frame at a point at the rear of said projection.

2 In a typewriting machine, the combination of a machine frame, a type-bar-segment support, means forfguiding the support to move up and down in the frame, a rock shaft journaled in the frame and eX-, tending transversely thereof, apair of rock arms rigidly held to said shaft and connected with said support to raise .and lower the support, each of said arms having a lateral projection, a pair ofshift key levers fulcrumed in the; frame adjacent opposite sides of the frame and each overlying the projection on the adjacent rock arm intermediate its fulcrum and key-carrying end, a spring for normally rocking the shaft and arms in a direction to elevate the support, and means releasable by the operation of either ofsaid key levers for locking the segment support in its normal elevated position.

3. In a typewriting machine, the combination of a machine frame, a type-bar segment support, means "for guiding the support to move up and down in the frame, a rock shaft journaled in the frame and extending transversely thereof, a pair of rock arms rigidly held to said shaft and connected with said support to raise and lower the support, each of said arms having a lateral projection, a pair of shift key levers fulcrumed in th frame adjacent opposite sides of the frame and each overlying the projection on the adjacent rock arm intermediate its fulcrum and key-carrying end, a spring for normally rocking the shaft and arms in a direction to elevate the support, a

fixed abutment on the frame, and spring urged latching means mounted on the segment support cooperating with said abutment to lock the support in its normal elevated position and releasable by either of the key levers.

4. In a typewritingmachine, the combination of a machine frame, a type-bar segment support, means for guiding the support to move up and down in the frame, a rock shaft journaled in the frame and extending transversely thereof, a pair of rock arms rigidly held tosaid shaft and connected with said support to raise and lower the support, each of said arms having a lateral projection, a pair-of shift key levers fulcrumed in the frame adjacent opposite sides of the frame and each overlying the projection on the adjacent rock arm intermediate its fulcrum and key-carrying end, a spring for normally rockingthe shaft and arms in a direction to elevate the support, a bail having a bar extending transversely of the machine and upstanding arms pivotally held to the segment support, a fixed abutment on the frame, a spring for forcing the trans verse bar of the bail over said abutment to lock the support in its normal elevated position, and an arm on each key lever for rocking the bail out of engagement with said abutment.

5. In a typewriting machine, the combination ofa machine frame, a type-bar segment support, means for guiding the support to move upon and down in the frame, a rock shaft 'journaled in the frame and extending transversely thereof, a pair of rock arms rigidly held to said shaft and connected, with said support to raise and lower the support, each of said arms having a lateral projection, a pair of shift key levers fulcrumed in the frame adjacent opposite sides of the frame and each overlying the projection on the adjacent rock arm intermediate its fulcrum and key-carrying end,-

a spring for normally rocking theshaft and arms in a dlrectlon to elevate the support,

' means on the segment support and frame having coacting cam faces for locking the segment in its elevated position, and an arm on each key lever loosely engaging the looking means on the segment support for releasing the support when either key lever is operated.

6. In a typewriting machine of the class in which the type-bar-support is normally held up and is manually depressed by caseshift key-levers, two stops on the base one of these stops being in direct alinement' with the support, a swinging stop-member car ried by the support and adapted to cooperate with the other stop, and devices operated from said key-levers to select thedesired sto In a typewriting machine, the combination of a support shiftable different dis tances to vary the relation between printing instrumentalities and a platen, spring means for moving said support to its normal position, a pair of key-operatedlevers for shifting the support in opposition to said spring, and means shiftably mounted on' the support and'movable a different distance by each lever for determining the case-shift pos1- tions to which the support is movable by the levers.

8. Double case shift mechanism for typewriting machines comprising a support shift ableto vary the relation between printing instrumentalities and a platen, fixed means cooperating with the support for determining the maximum limits of movement of.

the support, a stationaryintermediate stop,

a stationary locking abutment, a member same, one of said levers being connected with the shiftable member on the support to release the same from the locking abutment and hold it in a position to engage the intermediate stop and the otherlever being connected with said member to shift the same out of engagement with the abutment to a position in which it will pass the intermediate stop.

9. In a .typewriting machine of the class in which the type-bar-segment is normally held up, and is manually depressed by case shift key-levers, two stops for arresting the segment at difierent levels,'and' means controlled from the said key-levers to select the desired stop, said means embodying a swing ing bail carried bythe segment and adapted to cooperate with one of said stops, and a lock-stop adapted to cooperate with said bail when the segment is up to lock the segment in its upper position.

10. In a typewriting machine of the class in which the type-bar-segment is normally held up and is manually depressed by caseshift keylevers, two stops for arresting the segment at different levels, means controlled from thesaid key-levers to select the desired stop, said means embodying a swinging bail carried by the segment and adapted ,to cooperate-with one of said stops, and a lock stopadapted to cooperate withsaid bail when the segment is up to lock the segment I in its upper position, said bail and said lockstop being constructed to have a camming action.

11. In a typewriting machine, the combination of a frame, a support shiftable up and down in the frame to change case, means carried on the frame for determining the wedging or uppermost and'lowermost positions of the support, a spring normally forcing the support to its uppermost posltion, a locking and shift-controlling member pivotally held to the support, a spring for normally swinging said member into engagement with a stationary part of the machine to lock the support in itsnormal uppermost "position, a

stationary stop for arresting the support in an intermediate position, and a pair of shift keys operativelyconnected with the support for shifting the same downwardly and operatively connected with said member for swinging the same different distances, said member being adapted to engage the interis adapted to be engaged by the support to arrest the support in its lowermost position and the other two of which are adapted to be engaged by said device to respectively lock the support in its uppermost position and arrest the support in an intermediate position, said device being controlled by said key-operated means;

13. In a typewriting machine, the combination of a support shiftable different distances to vary the relation between printing means for moving the support to a normal elevated position, a pair of key-operated levers operatively connected with the support for shifting the same downward, a pair of stationary stops one of which is adapted to be engaged by the support to arrest the support in its lowermost position, and a bail pivotally held to the support to swing fore and aft of the machine and shiftable by one of said levers into position to engage the other stationary stop when the support is moved downward by said lever.

14:; In a typewriting machine, the combination of a support shiftable different distances to vary the relation between printing instrumentalities and a platen, yieldable means for normally moving the support up ward, means cooperating with the support for determining theuppermost and lowermost positions of the'support, a pair of stepped abutments spaced fore and aft of the machine, a bailhaving its side arms pivotally held to the support to swing fore and aft of the machine, a spring normally swinging the bail in one direction to engage the transverse portion thereof over the higherabutment and lock the support in its normal uppermost position, a pair of keylevers having keycarrying arms and arms connected with a side arm of the bail difierent distances from the pivotal point of the bail arm, and connections between the key levers and support for lowering the support.

15.111 atypewriting machine, the combi nation of a support shiftable different distances to vary the relation between printing instrumentalities and a platen, yieldable means for normally moving the support upward, means cooperating with the support for determining the uppermost and lowermost positions of the support, a'pair of stepped abutments spaced fore and aftof nasvfose the machine, a bail having its side arms pivotally held to the support toswing fore and aft of the machine, a spring normally swinging the bail in one direction to engage the transverse portion thereof over the higher abutment and lock the support in its normal uppermost position, a pair of key levers having key-carrying arms loosely engaging the support moving means for lowering the support and arms loosely engaging one of the side arms of the bail differentdistances from the pivotal point of the bail arm for swinging the bail different distances in opposition to the spring. I 16. In a typewriting machine, the combination of a frame, a type-bar-hanger support, a pair of short vertical'guides at opposite sides of the upper part of the frame, said support having slotted portions adjacent its upper edge at opposite sides thereof embracing said guides, a rock shaft journaled in the frame and extending transinstrumentalities and a platen, 'yieldable versely thereof, a pair of rock arms extending fore and aft of the frame rigidly held at one end to said shaft and pivotally con nected at their other ends with the support adjacent the lower edge of the support, a spring for normally rocking said arms upwardly and key-operated means for rocking said arms downwardly.

17. In a typewriting machine, the combination ofa frame, a type-bar-hanger support, a pair of short vertical guides at 0pposite sides of the upper part of the frame, said support having slotted portions adjacent its upper'edge at opposite sides thereof embracing said guides, a rock shaft journaled in the frame and extending transversely thereof, a pair of rock arms extending fore and aft of the frame rigidly held at one end to said shaft and pivotally connected at their other ends with the support adjacent the lower edge of the support, a

spring for normally rocking said arms upwardly, a pivoted latch mounted on the support for locking the support in its normal elevated position, and a key lever having an arm connected with one of the rock arms for rocking the arms downwardly and an arm connected with said latch for releasing the support when the key lever is actuated.

18. Multiple case shift mechanism for typewritingmachines comprising a support shiftable different distances in one direction from a normal position to vary the relation between printing instrumentalities and a platen, a plurality of shift keys connected to shift said support, and a swinging locking and shift-control'member for automatically locking the support in normal position shiftable different distances from its lockingposition by said keys to determine the caseshift position to which the support will be moved by each key. v

19. -Multiple case shift' mechanism for typewriting machines comprising a support shiftable different distances in one direction from a normal position to vary the relation between printing instrumentalities and a platen, a'plurality of shift keys connected with the support for shifting the same, a locking andvshift-controlling member movably mounted on the support and adapted to engage a stationary part of the machine to lock the support in normal position, said member being shiftable from looking posi- 7 tion a different distance by each key to determine the case-shift position towhich the support is movable by the key.

20. Double case shift mechanism for typewriting machines comprising a support shiftable from a normal position to two other positions to vary the relation between printing instrumentalities and a platen, a pair of shift key levers connected to shift the support having key-carrying arms and shiftcontrolling arms, and a swinging member adapted to look the support in, its normal position, said shift-controlling arms on the key levers engaging said member different distances from its pivotal axis for swinging the member different distances to determine thecase-shift positions to which the support is movable by the key-levers.

21. Double case shift mechanism for typewriting machines comprising a support shiftable from a normal position to two different positions to vary the relation between printing instrumentalities and a platen, a swinging locking and shift-controlling member, a spring for normally moving said member to a position to loclrthe support in normal po sition, a pair of key levers having key-carrying arms connected with the support to shift the support and arms of different length extending at an angle to the key-carrying arms and loosely engaging the swinging member for moving said member different distances to determine the case-shift positions to which the support is movable by the key levers.

22. In a typewriting machine, the combination of a frame, a support shiftable vertically different distances in the frame to vary the relation between printing instrumentalities and a platen, a rock shaft journaled in the frame and extending transversely thereof, a rock arm fixed on said shaft and pivotally connected with the support and having a lateral projection intermediate the shaft and support, a spring for normally rocking the arm upward to elevate the support, aswinging support-locking and shift-controlling member adapted to lock the support in its normal elevated position, and a pair of shift levers having parts loosely engaging over the projection on the rock arm to rock the arm downward, each of said levers being also= provided with a part loosely engaging said member and adapted to shift the same from locking position to a position determining the case-shift position to which the support is movable by the lever.

23. Double case shift mechanism for typewriting machines comprising a support shiftable different distances in one direction from a normal position to change case, fixed means cooperating with the support to determine the maximum limits of movement of the sup port, a stationary intermediate stop, a stationary locking abutment, a member pivotally held to the support normally engaging the abutment to lock the support at one limit of its movement, a spring normally swinging said member to locking position, and a pair of shift keys operatively connected with the support for shifting the same, one of said keys being connected with said member to swing the same from looking position into cooperative'relation with the intermediate stop and the other key being connected with said member to swing the same out of locking position to a position out of cooperative relation with the intermediate stop.

This specification signed this fifth day of September, A. D. 1918.

OTTO PETERMAN N 

